Tetrachloroglycoluril derivatives as chlorine liberators in ointments



UNITED srA Patented May 12, 1953 J 2,638,434 I TETRACHLOROGLYCOLURIL "DERIVATIVES AS c iLoi iNi L ERAToRs IN OINTMEINTS" Homer B. Adkins, Madison, Wis., assignor to the United .Statesof'America as represented by the Secretary of the Navy 1 No Drawing. Applicatioiijpril 117, 19 43, I

. v, Serial No. 483,500"

The present invention relates to protectivefind therapeutic ointments and more particularly, to an ointment of this character which contains a compound having a large proportion of available iii Claims. (Cl. 167-63) by the method described in the Willams application or by the method described and claimed in my copending application Ser. No. 483,499, filed of even date herewith.

A suitable anhydrous unguentary base for the However, the preferred ointchlorine. 5

Ointments which slowly evolve nascent chloforegoing chloramides may comprise an olearine are useful for various purposes as bacteri ginous glyceride ester, for example, triac'etin; cides, fungicides andthe like. Heretofore. oint- The thickening agent may consist of any of the merits of this character have been produced by, usual agents employed for this purpose in the incorporating a chloramide such as dichloru) cosmetic and pharmaceutical industry, for examine-T (N-dichloro-p toluene sulfonamide) -in ample, zinc stearate, magnesium stearate, celluan oleaginous base to produce a composition suitlose butyrate-acetate and the like. I able for application to affected areas of the body. thickening agents, magnesium stearate and cellu-' While ointments of this type are effective for the lose butyrate-acetate are preferred, inasmuch as intended purpose when freshly prepared, it has the resulting compositions appear to be somewhat been found that the available chlorine content more stable. of the prior compositions falls 01? rapidly when The proportions of the various components the material is stored at elevated temperatures. may, of course, be varied within wide limits, de- Moreover, the available chlorine content of prior v pending on the physical properties desired in the chloramide ointments is undesirably low. finished product.

One of the objects of the present invention is ment of the present invention consists, for exto provide an active chlorine-releasing ointment ample, of approximately 11 to 15% magnesium which is stable over a long period of time at elestearate, 34 to 35% tetrachlorodimethylglycoluril vated temperatures. Another object is the pron U- a fi In preparing the vision of an ointment of the character described ntm nt, th hl a is p a y r u d which contains an available chlorine content to a powder such that it will all pass through an greater than that of an ointment prepared from 80 mesh screen. The powdered chloramide and dichloramine-T. Other objects and advantages stabilizing agent (e. g., U. S. P. magnesium will be apparent as the invention is hereinafter stearate) are thoroughly mixed with each other more particularly described. and thereafter the mixture is slowly added to,

h foregoing objects may b att in d by i and completely mixed with,U. S. P. triacetin, this corporating a disubstituted tetrachloroglycoluril being accomplished, for example, by means of th compound with an anhydrous unguentary base typ f m x n appa atus us d in the p paration and preferably also with a conventional thickenof vanishing creams in the cosmetic trade. The ing agent, to form an ointment or salve suitable tu e is the put through a conventional ointfor application to afiected areas of the body. t mill and y be p agedinany convenient The tetrachloroglycolurils contemplated by the manner, for example, collapsible metal tubes present invention are of the type: having a resinous or wax lining. The resulting 01R, o1 composiiton is an ointment of the vanishing l I N cream type.

A sample of cream prepared in the foregoing 03 O manner showed no loss of available chlorine when stored at 50 C. for over a month. A cor- I i 1 responding ointment containing dichloramine-T Where R1 and R2 are alkyl or aryl groups. Tetraas the cmommlqe was foun.d to lose 9 5 to 1. 15% of its available chlorine when stored at chlorodimethylglycoluiil constitutes the pre- 0 f C. for thirty days. An ointment of the nonerred chloramide of the present invention, although closely related compounds such as tetra- Vamshmg cream type prepared from 5% cellulose butyrate-acetate, 35% tetrachlorodimeth 1- chlorodiphenylglycoluril, tetrachloromethylphen- 1 1 i1 Y ylglycoluril and the like, are also particularly 50 f ur and 9 tnacetm was y more Stable efficacious in these ointments. Compounds of an P qontammg the magnesmm as this general type are more particularly described the thlckemlls agent Thus a sample of the claimed in the copendmg application of ment conta ning the cellulose butyrate-acetate Jonathan w. Williams, Ser. No. 472,651, filed as thlckenms agent Showed a loss of nly 0.2% January 15' 1943 They may be prepared either available chlorine after seven days of storage at Of these.

75 C. A sample of a corresponding cream wherein zinc stearate was employed as the thickening agent showed a loss of 3 or 4% of available chlorine after seven days storage at 75 C. whereas the dichloramine-T ointment of the prior art showed a loss of about 67% of available chlorine under the same test conditions.

In the foregoing detailed description of the present invention it will be apparent that many variations may be made without departing from the spirit or scope thereof, and the invention should not be limited other than as defined by the appended claims.

I claim: l

1. An ointment comprising a chloramide dispersed in an anhydrous unguentary base, said chloramide including a compound having. the

formula:

c oo it 01 R2 (51 where R1 and R2 are selected from the group consisting of alkyl and aryl radicals.

2. An ointment comprising tetrachlorodimethylglycoluril dispersed in an anhydrous unguentary base.v

3. An ointment comprising tetrachlorodimethylglycoluril, an anhydrous unguentary base, and a thickening agent.

4. The composition of claim 3 wherein said base comprises triacetin.

5. The composition of claim 3 wherein said thickening agent comprises magnesium stearate.

6. The composition of claim 3 wherein said thickening agent comprises cellulose acetatebuty-rate.

7. An ointment of the vanishing cream type comprising approximately 11 to 15% magnesium stearate, 34 to 35% tetrachlorodimethylglycoluril and to 54% triacietin.

8. ointment comprising approximately 5% cellulose .butyrate-acetate, 35% tetrachlorodi- :methylglychliiril and triacetin.

HOIVIER B. ADKINS.

References Cited in the file of this patent UNITED STATES PATENTS Number Name Date 2,136,173 S'teingroever Nov. 8, 1938 2,1'5733 1' gMinaefi May 9, 1939 2,249,523 Hiatt July 15, 1941 OTHER REFERENCES Berichte Deutscher Chemischen Ges. 43 (1910) pp. 1992-93. (Copy in Patent Office Library.)

New and Nonofiicial Remedies, 1939, page 257. (Copy in Div. 43.)

The Merck Index, 5th edition (1940) page 331. (Copy in Div. '43.) 

1. AN OINTMENT COMPRISING A CHLORAMIDE DISPERSED IN AN ANHYDROUS UNGUENTARY BASE, SAID CHLORAMIDE INCLUDING A COMPOUND HAVING THE FORMULA: 